import Vue from 'vue'
import Router from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
import Welcome from '../components/Welcome.vue'
import Users from '../components/user/Users.vue'
import Rights from '../components/power/Rights.vue'
import Roles from '../components/power/Roles.vue'
import Cate from '../components/goods/Cate.vue'
import Params from '../components/goods/Params.vue'
import GoodsList from '../components/goods/List.vue'
import Add from '../components/goods/Add.vue'

Vue.use(Router)

const router = new Router({
  routes:[
    {path:'/',redirect:'/login'},
    {path:'/login',component:Login},
    {path:'/home',component:Home,
    redirect:'/welcome',
    children:[
      {path:'/welcome',component:Welcome},
      {path:'/users',component:Users},
      {path:'/rights',component:Rights},
      {path:'/roles',component:Roles},
      {path:'/categories',component:Cate},
      {path:'/params',component:Params},
      {path:'/goods',component:GoodsList},
      {
        path: '/goods/add',
        component: Add
      }
    ]}
  ] 
})

// 挂载路由导航守卫
router.beforeEach((to,from,next)=>{
// 将要访问的路径
// from代表从哪个路径跳转而来
// next是一个函数，表示放行
// next（）放行  next('/login')  强制跳转
if(to.path ==='/login') return next()
// 如果访问的不是登录页
// 获取token，进行判断
const tokenStr = window.sessionStorage.getItem('token')
if(!tokenStr) return next('/login')
next()

})


export default router
